On Friday night, skywatchers worldwide can see Mars rise in the southeast at sunset. And, for those in the Eastern Hemisphere, the sky will also feature the longest total lunar eclipse of this century.

Even with summer’s longer days, there is still plenty to enjoy in the night sky. WTOP Sky Guy Greg Redfern gives the lowdown on how to spot a planet among the stars and what astronomy events are happening in the D.C. area.

The recent Nobel Prize winner in physics, Rainer Weiss, helped prove Einstein’s 100-year-old theory on gravitational waves to to be accurate. He regaled the audience with stories on how he almost gave up on a career in science before coming back to MIT.

NASA held a media teleconference Tuesday to discuss the status of the long-awaited James Webb Space Telescope. Its launch, which was slated for 2018 and then 2019, has been pushed back again for tentatively 2020.